Cap spinning traveler



Jul 5,1947. BAUER 2,423,678

CAP SPINNING TRAVELER.

Filed April 24, 1945 2 Sheets-Sheet l r hi L ,Wm jg. 7 I 1 BY 7 M F M4 m .Fuly 8, 1947. U 2,423,678

CAP SPINNING TRAVELER Filed Apri l 24, 1945 2 Sheets-Sheet 2 INVEN TOR.

Patented July 8, 1947 American Viscose Co poration; Wi

pet, a corporation Delaware 'As utanonnis -iifz'i, 19 ij;;sajitist;589.951

The present invention elates to cap spinning apparatus -for winding. and twisting yarnsflof natural or artificial filamentsor-flbers.

In conventional .cap spinning systems, the yarn rubs .over the stationaryedge-or rim of thecap while moving both transversely and peripherally withrespect toit O'nthe other-hand; in ring spinning, a. traveler isprovided, with respect to which the yarn moves transverselyiwhereas the yarn does not'take the wear or friction involved in the peripheral motion with respect to't'he ring. Instead, the traveler takes' this portion {of the friction. v However, a ring-twister has" a." disadvantage in the extra timeand care needed to efiect lacing. I H j It is the principal object of the present invention to provide a cap spinning apparatus in which the yarn receives the wear and friction only with" respect to the'transverse motion ot, the yarn relative to the cap edge while'at the same time retaining ease of lacing. Other objects andad" vantages of'the invention will be apparent from the drawing and the description thereof h'erein after. i a

In general, the objects of the invention are achieved byproviding the edge of the cap with a traveler which holds theyarn out of contact with the stationary edge of the capwhile-the yarn moves the traveler peripherally with respect to the cap edge. v

A more complete understandingof the invention may be had by reference to the accompanying drawings. in which- Figure 1 is an elevation, partly in section, showing one illustrative embodiment of the invention;

Figure 2 is a-perspective of a part of the embodiment of Figure 1 on a somewhat enlarged scale;

' Figures 3 and 4 are plan-and elevational views of the traveler of the embodiment of Figures 1 and 2;

Figure 5 is a perspective illustrating the modification;

Figures 6 and 7 are plan and elevational views of the traveler of the modification of Figure 5;

- Figure 8 is an elevation showing the mounting of another form of traveler upon a cap edge;

Figure 9 is a section taken on lines IX-lX of Figure 8; c

Figure 10 is a modification of Figure '9, in which the slope of the bottom surface of the cap edge has a smaller angle than in Figure 9; 4

Figure 11 is a perspective view of the traveler I shown in connection with Figures 8 to 10; and

2 Claims. I (cr am;-

ft. .l12' sho s5. in which the qreveiegie esinej orm oi a: rotating ring mount-' Referring to Figures 1 to. 4,111 bobbin 2 is mounted uponra driven hollow spindle 3 through which theupright rod 4 extends anaemic; at

" itsupperend thecap 5. Relative reciprocating motion in. a verticall direction is imparted to the bobbin .cap,, either one of which may be held at a fixed level-while the other moves' vertically with respectthereto; The yarn proceeds downwardly zth; ughxajsuittiLble guide 6 about the bottomedgeoftheeap to'the bobblnfon which it is wound vIn aecordance'rwith the present invention the cap is providedwith a traveler 'l which may take the form of a bentwire having twotraillng legs. 8 ;which-.- fit fslidably within' upper; and lower:

grooves 9 provided-about the periphery of the cap Hi. This root-member may'bejthebottoni edge .01 the'cap itself, or it may' be'aqseparateo pleceas' shown,v adapted to be threadablysupported uponrthe base or bottom of the bodvportion oithecapo The trave1er=1 has portions .ex-a tending-from the two legs 8 and peripherally outwardly from the grooves.

reach around the outer edge of the cap to a bent These extensions portion which projects downwardly from the rim. It will be observed that the yarn in passing tion I? of the traveler which is then slid peripherally of the cap during the'rest of the period l the edge of the cap. or its skirt by virtue of the around the cap makes no contact with it, but passes around-the portion H which connects directly with the downwardly bent portion i2. Lacing is effected merely by passing the yam to .the bobbin under the cap regardless of the position of the traveler at the time of lacing. Rotation of the bobbin causes winding of the yarn and causes the yarn to form a' balloon between the guides 6 and the edge of the cap. This balloon quickly moves around the edge oi the cap until it catches up with the depending porof operation.

In Figure 5, an annular skirt 5% is threaded over a shoulder portion it oi. the cap 5a. The

skirt I3 is provided with an undercut groove 55 adapted to receive the legs it of the traveler E7.

The construction of traveler i l is such that it.

may be used with bobbins which rotate in either direction, the outwardly bent shoulders i8 serving to keep the yarn from making contact with fact that they project outwardly from (the edge of thecapr The "shoulders are joined by the Y i 3 loop I9, againstone sideof which-the yarn adapted to ride during operation.

In Figures 8 and 9, a skirt 20 may be threadedly supported upon the bottom edge of'the main cap body. This skirt has a flange 2| which is preferably inclined so that its bottom surface slopes in.- wardly and upwardly. An angle of 60 is shown in Figure 9, whereas an angle of about 10 slope is shownin Figure 10. The particular angle depends upon the weight of yarn, the speed of traverse and related factors.

The traveler 22 has a yarn-engaging depending portion 23 extending downwardly from a three-legged hook. Two of the legs reach around under the flange 2| and hook over thatedge at spaced points therealong, preferabl on opposite sides of the depending portion 23. The third hook f to balance as much as possible the resultant force of centrifugal action and gravity upon the traveler, with the resultant force of the yarn as it travels thereabout to the bobbin, in order to approach as closely as possible the idle condition of a floatingtraveler or sled.

It is to be understood the description hereinabove is illustrative only, and that changes and variations may be madewithout departing from the spirit and scope of the invention as defined in the appended claims.

, I claim:

1. Cap spinning apparatus comprising a non- I rotatably mounted cap, an annular guideway on reaches around in the front of the flanges The I traveler thus operates virtually as a sliding saddle or yoke. .The leg which lags with respect to the direction or rotation of the bobbin, has a portion 2B extending downwardly below the edge of the flange 2i and the yarn is adapted to travel about the lower rimof the cap, a traveler, guide means on the traveler arranged to co-operate with the guideway, said traveler havinga portion below, and extending in the general direction of, the

lower rim of the cap comprising a yarn-guiding this portion ofthe traveler, so that it is kept out 01 contact with the stationary cap.

Figure 12 illustrates a modification in which.

the lower rim of the skirt of a cap 5b is provided 1 a with a race 25 adapted to receive a plurality of anti-friction ball bearings 26. An outer race is provided within a skirt 2! and accommodates balls 28. Between the two sets of balls 28 and travelers may be selected to obtain a minimum amount 01 friction with respect to theguideways I or grooves in which they are adapted to travel I on the rim of the cap. The design of any particular typeot traveler can vary considerably, always taking into consideration the desideratum surface for holding theyarn out of contact with said rim and a portion bent downwardly from said yarn-guiding surface so that it extends in the way of the yarn as it passes under the cap.

2. Cap spinning apparatus comprising a nonrotatably mounted cap; an annular flange on the lower rim of thecap; and a traveler having a plurality of arms hooked aboutopposite edges of the dense. a portion projecting downwardly from the flange into'the way of the yarn as it passes under the cap and a shoulder extending back from said downwardly projecting portion having a yarn-guiding surface below the rim of the cap for holding the yarn out of contact with said rim.

. ERNEST K. BAUER.

REFERENCESCITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,864,020 Ingham June 21, 1932 261,300 Broadbent et al. July 18, 1882 1,639,406 Hartley Aug. 16, 1927 1,817,192 

